TITLE: GCN CIRCULAR NUMBER: 18535 SUBJECT: Correction to the Trigger Time for Swift GRB 151029A DATE: 15/10/30 12:54:17 GMT FROM: Scott Barthelmy at NASA/GSFC S. Barthelmy and F. Marshall (GSFC) on behalf of the Swift team: In GCN Circular 18522, we stated that the trigger time for GRB 151029A was 07:49:54 UT, but with the full data set downlinked, the correct trigger time is 07:49:39 UT. The correction for the on-board clock drift had not been applied in the original Circular due to the lack of some of the real-time TDRSS downlinked data. We apologise for any inconvenience.